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公开(公告)号：US5140656A
公开(公告)日：1992-08-18
申请号：US744615
申请日：1991-08-12
申请人： Akira Hasegawa , Yuji Kodama , Dietrich Marcuse
发明人： Akira Hasegawa , Yuji Kodama , Dietrich Marcuse
CPC分类号： H04B10/25077
摘要： In soliton optical fiber communication systems that comprise a multiplicity of spaced-apart intermediate non-electronic amplifiers, pulse arrival time jitter can be substantially reduced by incorporation into the transmission path of spaced-apart bandwidth-limiting elements. Exemplarily, the bandwidth-limiting elements are optical filters of bandwidth B.sub.f, with a filter associated with each intermediate amplifier, and with B.sub.f chosen to fall within the range B.sub.sol (N.sub.f /3).sup.1/2, where B.sub.sol is the FWHM spectral width of the soliton pulses, and N.sub.f is the number of intermediate filters in the system. More generally, the bandwidth-limiting elements are selected such that >.delta.t.sup.2 >, the variance of the jitter, is at most 90% of the variance associated with an, otherwise identical, comparison system that does not contain the bandwidth-limiting elements. Systems according to the invention thus can overcome the Gordon-Haus limit on the bit rate/distance product.
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公开(公告)号：US4313218A
公开(公告)日：1982-01-26
申请号：US176310
申请日：1980-08-08
CPC分类号： H03G3/3052 , H03G1/0052 , H03G3/14
摘要： An extended AGC circuit renders at least one of a pair of back-to-back diodes, which together form antenna switch, continuously conductive under high RF input signal conditions to the radio receiver to extend the AGC performance of the receiver over a greater range of RF input signal conditions. A local/distant switch function can be easily and economically added to the extended circuit.
摘要翻译： 扩展AGC电路使得一对背对背二极管中的至少一个形成天线开关，其在高RF输入信号条件下连续导通到无线电接收机，以在更大的范围内扩展接收机的AGC性能 RF输入信号条件。 本地/远程开关功能可以容易且经济地添加到扩展电路。
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公开(公告)号：US2153447A
公开(公告)日：1939-04-04
申请号：US10748736
申请日：1936-10-24
申请人： BANKS IRA O
发明人： BANKS IRA O
IPC分类号： H03G3/14
CPC分类号： H03G3/14
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